https://doi.org/10.1007/s100510050703
Thermal evolution of hole dynamics in the large-dimensional t-J model
University of Oxford, Physical and Theoretical Chemistry
Laboratory, South Parks Road, Oxford OX1 3QZ, UK
Received:
16
September
1998
Published online: 15 April 1999
The dynamics of a single hole in the 
model is
solved exactly for all temperature,
T, in the limit of large spatial dimensions, 
, using the
Feenberg renormalized perturbation series. We focus in particular on
single-particle spectra, together with optical and static hole
conductivities. Explicit results are illustrated for a Bethe lattice,
and exemplify the continuous thermal evolution of the
underlying string picture from the T=0 string-pinned limit through
to the paramagnetic phase. Quenched site-disorder is also readily
incorporated, exact results thereby being obtained for the interplay
between disorder and thermally-induced hole dynamics.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
